
Foreword to America and the image of Europe: Reflections on American Thought, Meridian Books, 1960, as cited in: Robert Andrews (1993) The Columbia Dictionary of Quotations https://books.google.com/books?id=4cl5c4T9LWkC&lpg=PA207&dq=Our%20attitude%20toward%20our%20own%20culture%20has%20recently%20been%20characterized%20by%20two%20qualities%2C%20braggadocio%20and%20petulance.&pg=PA207#v=onepage&q&f=false, Columbia University Press, p. 207.